package com.lijj.springboot_jsp_shiro.config;

import com.lijj.springboot_jsp_shiro.shiro.realms.CustomerRealm;
import com.lijj.springboot_jsp_shiro.shiro.cache.RedisCacheManager;
import org.apache.shiro.authc.credential.HashedCredentialsMatcher;
import org.apache.shiro.realm.Realm;
import org.apache.shiro.spring.web.ShiroFilterFactoryBean;
import org.apache.shiro.web.mgt.DefaultWebSecurityManager;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.HashMap;
import java.util.Map;

/**
 * 用来整合shiro框架相关的配置类
 */
@Configuration
public class ShiroConfig {

    //1. 创建shiroFilter,负责拦截所有请求
    @Bean
    public ShiroFilterFactoryBean getShiroFilterFactoryBean(DefaultWebSecurityManager defaultWebSecurityManager) {
        ShiroFilterFactoryBean shiroFilterFactoryBean = new ShiroFilterFactoryBean();

        //给filter设置安全管理器
        shiroFilterFactoryBean.setSecurityManager(defaultWebSecurityManager);

        //配置系统受限资源
        //配置系统公共资源
        Map<String,String> map = new HashMap<String,String>();
        map.put("/user/login","anon");//anno设置为公共资源 放行资源放在下面
        map.put("/user/register", "anon");
        map.put("/register.jsp", "anon");
        map.put("/user/getImage","anon");
        map.put("/**", "authc"); //authc请求这个资源需要认证和授权
        shiroFilterFactoryBean.setFilterChainDefinitionMap(map);

        //默认认证界面路径
        shiroFilterFactoryBean.setLoginUrl("/login.jsp");

        return shiroFilterFactoryBean;
    }

    //2. 创建安全管理器
    @Bean
    public DefaultWebSecurityManager getDefaultWebSecurityManager(Realm realm) {
        DefaultWebSecurityManager defaultWebSecurityManager = new DefaultWebSecurityManager();

        //给安全管理器设置
        defaultWebSecurityManager.setRealm(realm);
        return defaultWebSecurityManager;
    }

    //3. 创建自定义realm
    @Bean
    public Realm getRealm() {
        CustomerRealm customerRealm = new CustomerRealm();
        //修改凭证校验匹配器
        HashedCredentialsMatcher credentialsMatcher = new HashedCredentialsMatcher();
        //设置加密算法为md5
        credentialsMatcher.setHashAlgorithmName("MD5");
        //设置散列次数
        credentialsMatcher.setHashIterations(1024);
        customerRealm.setCredentialsMatcher(credentialsMatcher);

        //开启缓存管理
//        customerRealm.setCacheManager(new EhCacheManager()); //shiro默认的缓存管理器
        customerRealm.setCacheManager(new RedisCacheManager()); //redis缓存管理器
        customerRealm.setCachingEnabled(true); //开启全局缓存
        customerRealm.setAuthenticationCachingEnabled(true); //开启认证缓存
        customerRealm.setAuthenticationCacheName("authenticationCache");
        customerRealm.setAuthorizationCachingEnabled(true); //开始授权缓存
        customerRealm.setAuthorizationCacheName("authorizationCache");

        return customerRealm;
    }
}
